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What carbs for alky setup for 421


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New to the whole alky thing. Id like to get some lectron carbs but i dont know which size carbs to get.

I will also need to know what domes i should get.

I will also need a intake setup.

 

Current setup is a 421 with drag port. Cpi inframes.

I pretty mich use the

Banshee for wide open running. Bottom end isnt a worry for me.

 

Thanks

 

 

 

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Anything from a 35-39 or even 40mm carb will work for what you're trying to do.  Wide open throttle drag runs... you want to make as much air available to the engine as it wants to consume.  Just keep in mind that as the carb size increases the signal across the dump tube will decrease.  check out the jetting and exhaust forum, there's plenty of guys who have run the same setup you are asking about.

 

-Jared

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I'm also running 36/38 Lectrons. Motor is in line at Brandons waiting for Port work / Domes. I ran my previous set up this past season and will NEVER use any other carb set up. In my opinion Lectrons are the best option for Alky applications.

 

Troy

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billet bowl. dual pj 40/40 or 41.3/44's OR DMR pj's can usually fuel a 421 pretty good.  if its more of a rider 38's work fine or 36/38.  my wifes 350 has 36/38 they are some of the most popular size in lectrons. 

 

if the cub runs worth a crap your going to need the extra fuel capacity.  and not those goofy pj's that the openings are both at the same spot.. real dual pj's

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